Health-Related Quality of Life (HRQL) will be measured using both generic and disease-specific questionnaires. The Medical Outcomes Study Short Form 36-Item Health Survey (SF-36) will be used to obtain a general HRQL score to characterize our study sample, generating summary scores that can easily be compared with existing population norms and across different disease populations. To overcome the less responsive nature of generic instruments, we will also use the CRQ, a widespread disease-specific HRQL questionnaire which measures patients' dyspnoea, fatigue, emotional function and mastery. Total score on the CRQ will be used to measure change in HRQL from week 0 to week 12 to week 52. HRQL questionnaires will be administered by Dr. Lavoie.